diff --git a/java-17-openjdk.changes b/java-17-openjdk.changes
index 9ace0cd..fc35ba9 100644
--- a/java-17-openjdk.changes
+++ b/java-17-openjdk.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Thu Sep 14 07:58:44 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Added patch:
+  * reproducible-properties.patch
+    + use SOURCE_DATE_EPOCH for timestamp in the generated
+      properties files
+
 -------------------------------------------------------------------
 Wed Aug 23 06:27:50 UTC 2023 - Fridrich Strba <fstrba@suse.com>
 
diff --git a/java-17-openjdk.spec b/java-17-openjdk.spec
index 76c6051..b25372e 100644
--- a/java-17-openjdk.spec
+++ b/java-17-openjdk.spec
@@ -165,6 +165,8 @@ Patch10:        memory-limits.patch
 Patch12:        adlc-parser.patch
 # Fix: implicit-pointer-decl
 Patch13:        implicit-pointer-decl.patch
+# Use SOURCE_DATE_EPOCH in timestamp when writing properties
+Patch14:        reproducible-properties.patch
 Patch15:        system-pcsclite.patch
 Patch16:        fips.patch
 Patch17:        nss-security-provider.patch
@@ -406,6 +408,7 @@ rm -rvf src/java.desktop/share/native/liblcms/lcms2*
 %patch10 -p1
 %patch12 -p1
 %patch13 -p1
+%patch14 -p1
 
 %if %{with_system_pcsc}
 %patch15 -p1
diff --git a/reproducible-properties.patch b/reproducible-properties.patch
new file mode 100644
index 0000000..5c717ca
--- /dev/null
+++ b/reproducible-properties.patch
@@ -0,0 +1,15 @@
+--- a/src/java.base/share/classes/java/util/Properties.java
++++ b/src/java.base/share/classes/java/util/Properties.java
+@@ -903,7 +903,11 @@ public class Properties extends Hashtable<Object,Object> {
+         if (comments != null) {
+             writeComments(bw, comments);
+         }
+-        bw.write("#" + new Date().toString());
++        Date now = new Date();
++        if (System.getenv("SOURCE_DATE_EPOCH") != null) {
++            now = new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH")));
++        }
++        bw.write("#" + now.toString());
+         bw.newLine();
+         synchronized (this) {
+             for (Map.Entry<Object, Object> e : entrySet()) {